How do the heavenly bodies move, and how are these
movements related to one another? What forces of nature
govern such motions?

We now come to another jewel of a book titled Celestial Mechanics by Y. Ryabov. This book discusses many concepts of celestial motion including planetary and lunar motion, perturbations, satellites, two body-problem etc.

From the Preface:

The aim of this book is to tell the reader how the law of universal gravitation was discovered and how, on the basis of this law, the motions of celestial bodies are studied. We will learn that the movements of the most distant stars and the falling of bodies to the ground and the flight of man-made satellites of the earth, and of cosmic rockets too, are all subject to the same law of gravitation.

Towards the end we shall deal in brief with the nature of gravitation.

The book was translated from the Russian by G. Yankovsky. This edition was published by the Foreign Languages Publishing House in 1959.